Cheato doesn't have an issue with going sexual like caulpera does. I have kept it in my refugium under 24/7 lighting as stated above. The ball will continue to grow, but might end up getting large to where the bottom half becomes light starved. This is sometimes recommended to "tumble" it to prevent this, though I never ran into this issue personally. I have a simple 10 dollar clip on work light from walmart with a leftover bulb I had from a desk lamp. It works well for the price since the lighting doesn't have to be on the same level of soft corals...though it can be if you had such a unit laying around.